this post was submitted on 20 May 2024
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[โ€“] [email protected] 5 points 6 months ago (1 children)

So MRI helium is scarce because the required purity is very high to get the 4 Kelvin superfluid behavior. Helium for filling balloons (of the party type) is a lot, lot cheaper. I don't know exactly how that translates into airship envelope helium, but you can't take balloon-grade helium and put it in your MRI machine.

[โ€“] [email protected] 2 points 6 months ago

Huh, Today I Learn